Left Orbital Gyrus (Gyrus orbitalis sinister)
Educational content only — not medical advice.
Anatomy
The left orbital gyrus (orbital frontal cortex) is situated on the inferior orbital surface of the left frontal lobe resting on the orbital roof of the frontal bone. Divided by an H-shaped sulcus into anterior, posterior, medial, and lateral orbital gyri, it functions in gustatory, olfactory, and value-based decision making and social emotional processing.
Clinical notes
Orbitofrontal cortex lesions cause profound disinhibition, impulsivity, loss of empathy, and emotional lability, famously exemplified by Phineas Gage.
Related structures
Educational references
FAQ
What is the role of the Left Orbital Gyrus?
The left orbital gyrus (orbital frontal cortex) is situated on the inferior orbital surface of the left frontal lobe resting on the orbital roof of the frontal bone. Divided by an H-shaped sulcus into anterior, posterior, medial, and lateral orbital gyri, it functions in gustatory, olfactory, and value-based decision making and social emotional processing.
Why is the Left Orbital Gyrus clinically important?
Orbitofrontal cortex lesions cause profound disinhibition, impulsivity, loss of empathy, and emotional lability, famously exemplified by Phineas Gage.
Source & license
BodyParts3D, © The Database Center for Life Science licensed under CC Attribution 4.0 International (https://creativecommons.org/licenses/by/4.0/). license details